I like how I can "cheat" on the score by clearing the level near the exit and then get the character through for some extra points :D
Great job with game balance (though I couldn't finish... but I think I was close :D). I also liked how you designed some levels that you can actually use the layout to defeat the enemies (with separating the area with the stones so you can open it, lure the enemy one way and go through a different route, though sometimes the enemies seem to get stuck there)
Very cute characters :D Cool overheat mechanics! Awesome work overall!